A weapon for firing cased telescoped (CT) ammunition includes a barrel, a chamber member and a carrier assembly. The chamber member defines a chamber for a CT round for firing, and translates between a firing position aligned with the barrel and an ejection/loading position. The chamber member is spring-biased toward the firing position. Dual-feed structure provides for both a magazine mode as well as a belt feed mode of operation.

Provided herein is an automatic or semiautomatic rifle having a short-stroke action. While the stroke-length of the action in conventional weapons is typically 2 to 3 times the length of the cartridge it fires, the stroke-length of the presented rifle may be less than 1.5 times the length of the cartridge it fires. The reduced a stroke-length results in a reduced receiver size and overall weapon length as well as weigh savings. Such a short stroke-length is provided by the use of a divorced chamber that moves relative to the barrel of the rifle. In contrast to existing weapons having a firing chamber that is fixedly attached to the barrel, the firing chamber moves forward and rearward relative to a rearward end of the barrel. In such an arrangement, ammunition cartridges may be inserted in to a forward end of chamber and then positioned against a barrel of the rifle.

Provided herein is an automatic or semiautomatic rifle having a short-stroke action. While the stroke-length of the action in conventional weapons is typically 2 to 3 times the length of the cartridge it fires, the stroke-length of the presented rifle may be less than 1.5 times the length of the cartridge it fires. The reduced a stroke-length results in a reduced receiver size and overall weapon length as well as weigh savings. Such a short stroke-length is provided by the use of a divorced chamber that moves relative to the barrel of the rifle. In contrast to existing weapons having a firing chamber that is fixedly attached to the barrel, the firing chamber moves forward and rearward relative to a rearward end of the barrel. In such an arrangement, ammunition cartridges may be inserted in to a forward end of chamber and then positioned against a barrel of the rifle.

A weapon for firing cased telescoped (CT) ammunition includes a barrel. a chamber cavity aligned with the barrel, and a translating chamber member defining a chamber for holding a CT round for firing. The chamber member moves between a firing position in the chamber cavity and an ejection/loading position for ejecting a spent CT round and receiving a next CT round. A breech member closes a rear end of the chamber. A carrier performs a counter-recoil operation in which (1) the chamber member is moved from the ejection/loading position to the firing position with the next CT round therein, and (2) the breech is urged into a closed position against the next CT round in the chamber to remove headspace before the next CT round is fired from the weapon.

A weapon for firing cased telescoped (CT) ammunition includes a barrel. a chamber cavity aligned with the barrel, and a translating chamber member defining a chamber for holding a CT round for firing. The chamber member moves between a firing position in the chamber cavity and an ejection/loading position for ejecting a spent CT round and receiving a next CT round. A breech member closes a rear end of the chamber. A carrier performs a counter-recoil operation in which (1) the chamber member is moved from the ejection/loading position to the firing position with the next CT round therein, and (2) the breech is urged into a closed position against the next CT round in the chamber to remove headspace before the next CT round is fired from the weapon.

The present disclosure presents a barrel assembly for a firearm. The barrel assembly includes a barrel having an internal bore and an external surface, and a recoil spring lug affixed to an outside surface of the barrel. The barrel assembly also includes a slide moveably mounted relative to the barrel, and a recoil spring biased on the recoil spring lug and the slide.

The present disclosure presents a barrel assembly for a firearm. The barrel assembly includes a barrel having an internal bore and an external surface, and a recoil spring lug affixed to an outside surface of the barrel. The barrel assembly also includes a slide moveably mounted relative to the barrel, and a recoil spring biased on the recoil spring lug and the slide.

A firearm for firing cased telescoped (CT) ammunition cartridges that includes a split chamber configured to fully support a CT cartridge when it is fired, and that includes i) a dynamic rear chamber portion defining a pocket in a face of a bolt, and ii) a static front chamber portion that is integral to the barrel and separate from the bolt. A cartridge extraction mechanism engages the CT cartridge prior to the CT cartridge being fired, and holds the CT cartridge in the pocket in the bolt face as the bolt moves rearward to pull the CT cartridge out of the static front chamber portion and into an ejection position. An ejector is operable to eject the CT cartridge from the pocket in the face of the bolt when the CT cartridge reaches the ejection position.

A firearm for firing cased telescoped (CT) ammunition cartridges that includes a split chamber configured to fully support a CT cartridge when it is fired, and that includes i) a dynamic rear chamber portion defining a pocket in a face of a bolt, and ii) a static front chamber portion that is integral to the barrel and separate from the bolt. A cartridge extraction mechanism engages the CT cartridge prior to the CT cartridge being fired, and holds the CT cartridge in the pocket in the bolt face as the bolt moves rearward to pull the CT cartridge out of the static front chamber portion and into an ejection position. An ejector is operable to eject the CT cartridge from the pocket in the face of the bolt when the CT cartridge reaches the ejection position.

A weapon for firing cased telescoped (CT) ammunition includes a barrel, a chamber member and a carrier assembly. The chamber member defines a chamber for a CT round for firing, and translates between a firing position aligned with the barrel and an ejection/loading position. The chamber member is spring-biased toward the firing position. The carrier assembly carries the firing pin and (1) performs a recoil in which a carrier and rammer move rearward from a battery position to bring the next CT round into a ramming position and to move the chamber member from the firing position to the ejection/loading position, and (2) performs a counter-recoil to return to the battery position and cause the rammer to push the next CT round into the chamber. The chamber member is released for biased return to the firing position for a next firing cycle.